CN212303371U - Transformer magnetic core blank for liquid crystal display - Google Patents
Transformer magnetic core blank for liquid crystal display Download PDFInfo
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- CN212303371U CN212303371U CN202022303298.7U CN202022303298U CN212303371U CN 212303371 U CN212303371 U CN 212303371U CN 202022303298 U CN202022303298 U CN 202022303298U CN 212303371 U CN212303371 U CN 212303371U
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Abstract
The utility model discloses a magnetic core blank of transformer for LCD, including the blank bottom plate, be provided with center pillar and the symmetrical side post of locating the center pillar both sides on the upper surface of blank bottom plate, the blank still includes the heavy groove of locating on the lower surface of blank bottom plate, the heavy groove is including heavy groove I that is located blank bottom plate middle part, heavy groove II that is located blank bottom plate broadside and the heavy groove III that is located blank bottom plate long limit, the channel direction of heavy groove I extends along the length direction of blank bottom plate and sets up perpendicularly mutually with the extending direction of center pillar, heavy groove II has two sets ofly, set up respectively on the both sides broadside of blank bottom plate, heavy groove II in each group all caves in to the middle part along the broadside of blank bottom plate; the two groups of the sinking grooves III are respectively arranged on the long edges of the two sides of the blank bottom plate, and the sinking grooves III in each group are sunken towards the middle part along the long edges of the blank bottom plate. The magnetic core blank is not easy to damage and deform in the sintering process, and a finished product manufactured by the magnetic core blank has the characteristics of high power and strong heat dissipation performance.
Description
Technical Field
The utility model relates to a magnetic core blank technical field, concretely relates to magnetic core blank of transformer for LCD.
Background
In recent years, with the continuous progress of the electronic industry, the liquid crystal display television is rapidly developed towards energy conservation, light weight and thin type, the height of a PCB (printed circuit board) can be reduced by applying the magnetic core to an LED or OLED (organic light emitting diode) liquid crystal display television, the overall thickness of the liquid crystal display television is finally reduced, the thin type production of the liquid crystal display television is facilitated, but a further requirement is made on the structure of the magnetic core.
The magnetic core is a sintered magnetic metal oxide consisting of various iron oxide mixtures, the production process of the magnetic core consists of five processes of particle material preparation, compression, sintering, grinding and sorting, the compression is to produce a magnetic core blank by using a die and a press through a pressure forming method, then the blank is sintered and reacted on a nitrogen kiln, and the formed magnetic core blank has uneven density, is easy to deform after sintering, causes poor size of the magnetic core and directly influences the quality of the product, so how to reduce the defective rate of the magnetic core is the problem which is addressed by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of prior art, provide a magnetic core blank of transformer for LCD.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a magnetic core blank of transformer for LCD comprises a blank bottom plate, a central column and side columns symmetrically arranged at two sides of the central column are arranged on the upper surface of the blank bottom plate, the middle column extends along the width direction of the blank bottom plate, the side columns are positioned at two end parts of the blank bottom plate in the length direction, the blank also comprises a sinking groove arranged on the lower surface of the blank bottom plate, the sinking groove comprises a sinking groove I positioned in the middle of the blank bottom plate, a sinking groove II positioned on the wide edge of the blank bottom plate and a sinking groove III positioned on the long edge of the blank bottom plate, the channel direction of the sinking groove I extends along the length direction of the blank bottom plate and is perpendicular to the extending direction of the central column, the two groups of the sinking grooves II are respectively arranged on the wide edges of the two sides of the blank bottom plate, the sinking grooves II in each group are sunken towards the middle part along the wide edges of the blank bottom plate, and each group of the sinking grooves II comprises two sinking grooves II symmetrically arranged on the two sides of the sinking groove I; the heavy groove III has two sets ofly, sets up respectively on the long edge of the both sides of blank bottom plate, and heavy groove III in every group all is sunken to the middle part along the long limit of blank bottom plate, and every heavy groove III of group sets up two heavy grooves III in the center pillar both sides including the symmetry.
Preferably, in the sinking grooves, the depth of the sinking groove I is greater than that of the sinking groove III and less than that of the sinking groove II.
Preferably, the width of the sinking groove I is 1.2-1.5 times of the width of the middle column.
Preferably, the height of the center pillar is equal to the height of the side pillar, the width of the side pillar is 1/2-1/3 of the width of the center pillar, the distance between the side pillar and the center pillar is 2-3 times of the width of the center pillar, and the distance between the side pillar and the center pillar is 5 times or more of the height of the center pillar.
Preferably, the two long sides of the upper surface of the blank bottom plate are respectively provided with a transition inclined surface towards the side surface of the blank bottom plate.
Preferably, the width of the sinking groove II is larger than that of the side column.
Preferably, four top corners of the upper surfaces of the side columns and the middle column are provided with arc-shaped chamfers.
Preferably, the length of the groove surface of the sinking groove II is equal to that of the sinking groove III, and the width of the groove surface of the sinking groove II is smaller than that of the sinking groove III.
Preferably, the length and the width of the groove surface of the sinking groove III are equal.
Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage: the utility model discloses a magnetic core blank of transformer for liquid crystal display, it sets up heavy groove in the bottom surface of blank bottom plate, has not only played the effect that increases blank intensity, has still increased the shaping density of blank simultaneously for the finished product that the sintering was come out can not warp, has improved the product percent of pass, and sets the interval between side column and center column to be far more than the height of center column, has increased the heat radiating area of whole magnetic core.
Drawings
Fig. 1 is a front view of a magnetic core blank of a transformer for a liquid crystal display according to the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a bottom view of FIG. 1;
wherein: 1. a blank base panel; 2. a center pillar; 3. side columns; 4. sinking a tank I; 5. sinking a tank II; 6. sinking a tank III; 7. a transition bevel; 8. and (6) arc chamfering.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.
A magnetic core blank of a transformer for a liquid crystal display comprises a blank bottom plate 1, wherein a middle column 2 and side columns 3 symmetrically arranged at two sides of the middle column 2 are arranged on the upper surface of the blank bottom plate 1, and the blank bottom plate is shown in figures 1 and 2. The middle column 2 extends along the width direction of the blank bottom plate 1, the side columns 3 are positioned at two end parts of the length direction of the blank bottom plate 1, the blank further comprises sinking grooves arranged on the lower surface of the blank bottom plate 1, and as shown in fig. 3, the sinking grooves comprise a sinking groove I4 positioned in the middle of the blank bottom plate 1, a sinking groove II 6 positioned on the wide side of the blank bottom plate 1 and a sinking groove III 7 positioned on the long side of the blank bottom plate 1, the channel direction of the sinking groove I4 extends along the length direction of the blank bottom plate 1 and is perpendicular to the extending direction of the middle column 2, two groups of sinking grooves II 6 are respectively arranged on the wide sides of the blank bottom plate 1, the sinking grooves II 6 in each group are sunken towards the middle along the wide sides of the blank bottom plate 1, and each group of sinking grooves II 6 comprises two sinking grooves II 6 symmetrically arranged on two sides of the sinking; heavy groove III 7 has two sets ofly, sets up respectively on the long edge of the both sides of blank bottom plate 1, and heavy groove III 7 in every group is all sunken to the middle part along the long limit of blank bottom plate 1, and every heavy groove III 7 of group sets up two heavy grooves III 7 in center pillar 2 both sides including the symmetry.
In the sinking grooves, the depth of the sinking groove I4 is greater than that of the sinking groove III 7 and is less than that of the sinking groove II 6. Because the forming density of the middle part of the blank is weaker than that of the edge part when the blank is formed, the groove depth of the sinking groove I4 is set to be larger than that of the sinking groove III 7, and because the position of the sinking groove II 6 is placed below the side column 3, the forming density in the width direction is weakest, and therefore, the groove depth of the sinking groove II 6 is deepest. Here, the width of the sink groove ii 6 is larger than the width of the side post 3. Because the part span between the side column 3 and the middle column 2 is large and the thickness is thin, the density is weaker than that of the side column 3, the density of the product is too small when the product is separated from the pressing die cavity, and the product is easy to be demoulded and cracked, therefore, the width of the sink groove II 6 is larger than that of the side column 3, so that the powder in the die cavity is pressurized again at the sink groove II 6 during pressing, and the density is increased.
In this example, the length of the groove surface of the sinking groove II 6 is equal to that of the sinking groove III 7, and the width of the groove surface of the sinking groove II 6 is smaller than that of the sinking groove III 7. The length and the width of the groove surface of the sinking groove III 7 are equal.
Here, the width of the sink tank I4 is 1.2 to 1.5 times the width of the center pillar 2. The height of the center pillar 2 is equal to the height of the side pillar 3, the width of the side pillar 3 is 1/2-1/3 of the width of the center pillar 2, the distance between the side pillar 3 and the center pillar 2 is 2-3 times of the width of the center pillar 2, and the distance between the side pillar 3 and the center pillar 2 is 5 times or more of the height of the center pillar 2. Set to the height that is far greater than center pillar 2 through the interval with between 3 and the center pillar 2 of side pillar for the magnetic core bottom that the later stage was made is big, and power is strong, heat radiating area greatly increased.
Here, the two long sides of the upper surface of the blank base plate 1 are provided with transition slopes 7 towards the sides of the blank base plate 1, respectively, as shown in fig. 1. So that the adhesive tape used for packaging is not easy to abrade when packaging at the later stage.
In this example, the four corners of the upper surfaces of the side pillars 3 and the center pillar 2 are each provided with an arc-shaped chamfer 8, as shown in fig. 2. Through setting up arc chamfer 8 for be difficult for wearing and tearing the sticky tape when later stage magnetic core packing.
In this example, the size of the magnetic core blank is 70.74mm long, 58.75mm wide, 6.7mm high, 3.06mm thick bottom plate, 70.74mm long, 16mm wide and 0.2mm deep; the length of the sink groove II 6 is 10mm, the width of the sink groove is 5.2mm, and the depth of the sink groove is 0.3 mm; the length of the sink groove III 7 is 10mm, the width of the sink groove is 10mm, and the depth of the sink groove is 0.1 mm. The magnetic core blank with the size is not easy to deform and damage in the sintering process, and meanwhile, the magnetic core blank with the structure is high in power and high in heat dissipation performance. After the magnetic core blank is sintered, the bottom sink groove is ground flat in the grinding process, so that the outer surface of the obtained finished product is smooth.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (9)
1. A magnetic core blank of a transformer for a liquid crystal display, comprising a blank base plate, the upper surface of the blank bottom plate is provided with a center post and side posts symmetrically arranged at two sides of the center post, the center post extends along the width direction of the blank bottom plate, the side columns are positioned at two end parts of the blank bottom plate in the length direction, the blank also comprises a sinking groove arranged on the lower surface of the blank bottom plate, the sink groove comprises a sink groove I positioned in the middle of the blank bottom plate, a sink groove II positioned on the wide edge of the blank bottom plate and a sink groove III positioned on the long edge of the blank bottom plate, the channel direction of the sinking groove I extends along the length direction of the blank bottom plate and is perpendicular to the extending direction of the central column, the two groups of the sinking grooves II are respectively arranged on the wide edges of the two sides of the blank bottom plate, the sinking grooves II in each group are sunken towards the middle part along the wide edges of the blank bottom plate, and each group of the sinking grooves II comprises two sinking grooves II symmetrically arranged on the two sides of the sinking groove I; the heavy groove III has two sets ofly, sets up respectively on the long edge of the both sides of blank bottom plate, and heavy groove III in every group all is sunken to the middle part along the long limit of blank bottom plate, and every heavy groove III of group sets up two heavy grooves III in the center pillar both sides including the symmetry.
2. The blank for a transformer core for a liquid crystal display according to claim 1, wherein in the sinker, a groove depth of sinker i is larger than a groove depth of sinker iii and smaller than a groove depth of sinker ii.
3. The blank for a transformer core for a liquid crystal display according to claim 1, wherein the width of the sinking groove I is 1.2 to 1.5 times the width of the center pillar.
4. The blank transformer core for liquid crystal display according to claim 1, wherein the height of the center leg is equal to the height of the side legs, the width of the side legs is 1/2-1/3 of the width of the center leg, the distance between the side legs and the center leg is 2-3 times the width of the center leg, and the distance between the side legs and the center leg is 5 times or more the height of the center leg.
5. The blank for a transformer core for a liquid crystal display according to claim 1, wherein both long sides of the upper surface of the blank bottom plate are respectively provided with a transition slope toward the side of the blank bottom plate.
6. The blank transformer core for liquid crystal display according to claim 1, wherein the width of the sinking groove ii is larger than the width of the side post.
7. The blank for a transformer core for a liquid crystal display according to claim 1, wherein four corners of the upper surfaces of the side legs and the center leg are each provided with an arc-shaped chamfer.
8. The blank of transformer core for LCD according to claim 1, wherein the length of the slot surface of the second sinking slot is equal to the length of the slot surface of the third sinking slot, and the width of the slot surface of the second sinking slot is smaller than that of the third sinking slot.
9. The blank for a transformer core for a liquid crystal display according to claim 1, wherein the slot face of the sinker iii has an equal length and width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022303298.7U CN212303371U (en) | 2020-10-16 | 2020-10-16 | Transformer magnetic core blank for liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022303298.7U CN212303371U (en) | 2020-10-16 | 2020-10-16 | Transformer magnetic core blank for liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212303371U true CN212303371U (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022303298.7U Active CN212303371U (en) | 2020-10-16 | 2020-10-16 | Transformer magnetic core blank for liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212303371U (en) |
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2020
- 2020-10-16 CN CN202022303298.7U patent/CN212303371U/en active Active
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